Question

if a frog's size is 0.9cm,then if we keep how much such frogs does we get 1meter.

Answer 1

total length divided by length of each frog
100/0.9=111.1=111 as no of frogs is a whole no.

Answer 2

hi friend
here's your answer looking for

if a frog size = 0.9cm or 9mm

and,

the 1m = 100cm or 1000mm

so,

Number of frog that can be put in 1m or 1000mm =
$\frac{1000}{9} \\ = 111.1111...............$
or,
$111.11$
or
111
so, this is your answer

hope you are satisfied with my answer